.
.<*]E$2I+]2IVW<*]2I+]2I
VW(,<*5#D/DI*>$&#*5FWT(b*
] R#* ! FW-<* ] V "# #0 ] V
D#*+ W a<* ] V & ] V :Wg<* G 2& N
D[ N D GVWo<* 'E#*/ 2 > W.,<*
R#* Dˆ ] @ 'W..<* 'E #*/ 2 > '4W.<*
2I+'4 W.T<*e! $#W.-<* !$#"
2N&*W.<*5#D/?FVW.<O 6G*
LV 'W<l 2K 7 % #*5 FW.a<k 6
N e ! $#W<k 6 N 'E #*/ 2 LV 'W.b<O 6 G Š
+# $&! 2W.g<O 6 G #W.o<O 6G&* 2 '#'E
#<
!/!()
9>\-FU).,Dw (.T-,S(R#2#*5
254
142
φ
φ
+!F<7G;#*5
V =$#
O &$h.i(hi(hi"$Q$]2&NNDI<
` @R#&LF
D 2& N ' > 23 7 D: N T … $ #*5
+ _ e … $ #*5
,
<<<<<<<<<<
<
T<
H ;Q.g)
.
(
<<<<<<<<<<
.g<
D+D+E$
.g
≈
.o
"&*_e
<
^ &*7.*><
:\-#'^
p JGV<
N O<
^ &* a,G>2VAI2D:N5#_8'J
]2&N*+hTS-,(aTSobi7$%'JK#
]2E<H ;#*5#2VV
R##38
!F6R#*.eh.ei 2'':
E+>2P2IVMG
-
CQ#*"\#*5'rLFGV>6: =$#<
c…$#*5:5#/GV:]&;2P.<
c…$#*52&N*+<
$
c…$#*57$%(%&**'JK#b
…$#*5AI$N8a(g((a(T,(TT(Tg<
2
c…$#*57K2<7K27T…$#*5
c2IFV'4<
x.
$
7}
b2&NK#A$
2IVMG
A<
)7$#*6A5#_8
xs
.
<}
<
2
s
.
cF$K:&$E "W
c_I}
2
c\-.?/ 7!UV*'Jn<s \#
$
$#*8
xs
<
}
<
2
<
…I}
2<
^\-.?c Uv *'JVz#+<s \#s c$
eVK„ hK„ .ƒƒx-(Ti<
H ; #*5 V „ V K# 2E 'J 2& N
*+Vz#+TS-,<
` LF8
i
cigb
i
<}
<
gb
i
1
s
…#3I}
…EI
2<
^\-.?d -UV*76'!V6#<
s \#8
ci
p
tmm
D
π
4,254,251
==
′′
=
hp
cFVE„ ($6#K„ i
)(
60
60
)(1
78
gb
ipi
i
ZKD
1
4
⋅⋅=
p
c…#3I}
(…EI
2
c .?*!#+UVD#*+V72II(;'J
GV5#M#('M#2<<<‹ VD#*+$=D#*+
>TV"##0D/"< …$#*5D#*+(g(M
… $ #*5 : 5#
2
1
56
28
==
22
88
g
^ .?-PUŒ "#M#;#*5GK(;#*5G
K+
7&*>^
(^
(^
-
/+R#*!FVu k <
c . ? / a @!U ; LG $V 1 ] K# <
#*"G6R#*e5#'+5#1<V*"#M#
…$#*5FL&<• 1*72F"%*>^
-
72&NgN
DII2&N-aGEI!u k y)7R#2LV'+!
FV72IVx-<
P $ ,
H ;#*5V(+*>^ -(%EF
2&N7 }xgNDII2&N7}x-a#*5 R#*>
$"#!I!Fc2&FaSg<)!*#*55:5
F&/'45F:+FV<
^$"8)!2&FgR#]2&NTTSa,h2&Na,
Q D6 "!iR#*>K#+ ]2&N.TSaaI2&N|